CDC Mayfly

Published Aug 26th 2006

A generic dunny mayfly


One day I was given this fly by a friend, but I only got one.
The finished fly - CDC and extended body
The finished fly

I found it nice and convincing and decided to put it away until tying time.
During the summer 2006 I fished it in Tuscany - Italy and lost it.

A few weeks ago my job took me to Jutland where I had a meeting close to some danish streams. I spent an afternoon with Ripley Davenport (known by regulars in the GFF forum and Pix section) at the banks of one of them. As it got darker we witnessed one of the most hysteric hatches I have ever seen. Duns crawled up and down our waders. Nymphs were emerging through the surface and duns penetrated the film to get to the buttom.

Photographing in the sparse light was difficult, but we got some pictures, which inspired me to take up this pattern again - before it escaped my memory.

I know the tail and color is not realistic in this specimen, but this is a generic pattern and it will probably show it's effectivness just the same.

Stream curve - Just before the hatch.
Stream curve

CDC May Fly

HookDry Fly, ie. Partridge SLD.
TailExtended may fly body.
BodyDry fly dubbing, light colurs mixed with a little bit of dark coloured.
HackleBrown or grizzle, parachute style.
WingTwo bottom parts of cdc feathers.
HeadDarker dubbing mix.

Ripley is being challenged... - four trout, which preferred naturals and not our waste from the vices.
Ripley is being challenged...
Hatching on the waders -
Hatching on the waders

Tying instructions
  1. Make 10 extended may fly bodies/tails or look through your materials to see if you got some pre-made ones.
  2. Attach the thread.
  3. Tie in the body/tail., Ajust the length.
  4. Tie in the two cdc-feathers. Secure them and tie them in up-right position.
  5. Stabilize the wing base
  6. Dub the body behind the wing.
  7. Tie in the hackle.
  8. Turn the hackle around the wing base.
  9. Secure the hackle making the thread follow the hackle 4-5 times.
  10. Dub the front body and head.
  11. Whip finish.
  12. Ajust the wing length.
  13. Tie 9 more.
  14. Go fishing.

Step 1 - Tie on
Step 1
Step 2 - Tie in the tail.
Step 2

Step 3 - Ajust the length of the tail.
Step 3
Step 4 - Tie in 2 buttom part of grey cdc feathers.
Step 4

Step 5 - Ajust the wings as shown.
Step 5
Step 6 - Dub the body.
Step 6

Step 7 - Tie in yhe hackle.
Step 7
Step 8 - Turn the hackle, parachute style.
Step 8

Step 9 - Snip off the hackle point.
Step 9
Step 10 - Ajust the wing lenght.
Step 10

Step 11 - Finished.
Step 11
Top view -
Top view

Front view. -
Front view.

Read more about how to make extended bodies here

User comments
From: Max_Lemberg_Ukraine · max_kusakin·at·  Link
Submitted September 15th 2009

Nice fly! As my practice shows there is no use to make such complicated steps. I use only 2 cdc feathers for both extended body and the wing. One disadwantega - it work only for one trout and the is totally destroyed, but for many graylings)

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